Nozzle



Jagg'z. 1945. F, IAMES a 2,366,264 NOZZLE Filed June 4, 1943 ATTOEVE'YSPatented Jan. 2, 1945 Franklin E. James,

Manufacturing Corporation, Longlsland N. Y., a corporation of DelawareAlmont, Pa., assigner to Mack City,

Application J une 4, 1943, Serial No. 489,629

'(Cl. 299---138l` 3 Claims.

The present invention relates to nozzles by means of which` fluids maybe directed in any desired direction and embodies, more specifically,an` improved form of nozzle having mechanism by means of which the ilowof uid may 4be changed as desired. More particularly, the

invention embodies mechanism by means of i which the flow of fluidthrough the nozzle may be treated in such fashion as to produce a greatquantity of small particles, forming, in eiect, an

artificial fog of suiicient driving or carrying pow- 'er to bedirected'aganst the desired objective.

In apparatus for fighting fires adjustable nozzles have hereto-fore beenprovided, the purpose of which has been to vary the characteristics ofthe water or fluid directed at the re. Incertain instances it 'isdesirable to produce a fog which causes the iire to be blanketed andsmothered, and an object of the present invention is to providea nozzleby means of which such a fog may be produced.`

A further object 'of the invention is `to provide a mechanism havingadjustable means therein, by means of which the uid flow may be readilycontrolled to form a fog having the desired properties, the mechanismincluding means for interrupting the lamellar flow of uid through thenozzle.

Other and further objects of the invention will be apparent as it isdescribed in greater detail in connection with the accompanying drawing,wherein:

Figure 1 is a partial view in section taken longitudinally of a nozzleconstructed in accordance with the invention;

Figure 2 is a view in section, taken on line 2--2 of Figure 1;

Figure 3 is a view similar to Figure `1 show- 4ing the position of theadjusting mechanism `to produce a different character of fluid iiow thanthat shown in Figure 1; and

Figure 4 is a view similar to Figure 1, showing a further adjustedposition of the nozzle mechanism.

The form of nozzle chosen to illustrate the incasing 40 which isprovided with an outlet aperture 4l and a pair of plugs 42 `mounted uponthe shafts 43. Theplugs are formed with eccentric grooves 44 whichcombine to produce a passage that can be variedin size as well as inposition with respect to the axis of the nozzle. For example,` asillustrated inV Figure 1, the plugs 42 are in a position to afford amaximum passage through the nozzle at the axis thereof. As shown inFigure 2, this passage may be of circular cross-section. i

In Figure 3, each of the plugs has been turned through 180 degrees, andthe flow of the fluid throughthe nozzle is diverted as indicated byvention and shown in Figures 1 to 4, includes a i rected toward theiire.

the arrows, sol that two streams are `formed which converge in thenozzle outlet 4| and produce a maximum interference to form a fog. Theposition of the plugsl as shown in Figure 4, produces a modiiiedfluid owwith turbulence due to the pockets formed on the outlet sides of theplugs 42. It will be understood that the nozzle may be` `provided with asuitable sleeve which may be `threaded to permit it tobe secured to ahose i connection and that mechanism may be included to permitorientation of the nozzle casing 4D.

From the foregoing, it Will be seen that a nozzle has been providedhaving a capacity for maximum` adjustment to produce a stream. of uidhaving a desired characteristic of simulating a fog, and that the streammay be varied not only to vary the character ofthe fog, but also of theforce with which the stream `While the invention has been shown withreference to the specic `form of nozzle illustrated in theaccompanyingldrawing, it is not to be limi ited save as deiined in theappended claims. I claim: l

1. A nozzle comprisinga casing formed with a passage for -uidtherethrough and semi-cylindrical cavities therein adjacent to oneendof` said passage, a pair of cylindrical plugs rotatably supported insaid cavities and having peripheral portions engaging the casing andeach other, a groove extending around the major portion of' theperiphery of Ieach plug and eccentric thereto, and means for rotatingsaid plugs to permit iiuid to, flow` through said grooves between theplugs or to iiow through said cavities between said fplugs and saidcasing` and to vary` the flow of fluid therethrough.

2. A nozzle comprising a casing formed with a passage therethroughbetween theY inlet and. outlet `ends thereof, the outlet end beingformedi with a discharge orifice, rotatable plugs in the `nozzle having theirperipheral portions in engagement with the casing and with each other,

`a groove o-f varying depth extending partially around the periphery ofeach plug, and means to rotate the plugs to vary the character of the`extending around the periphery of and eccentric to each plug, thegroove bottom being` tangent to the `periphery of said plug at onepoint, and means toV rotate the plugs to vary the character of the iiowof fluid through the nozzle.

l FRANKLIN E. JAMES.

